Stellarium for Mac is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. It is being used in planetarium projectors. Just set your coordinates and go. Features of Stellarium for macOS:

Sky

• Default catalog of over 600,000 stars
• Extra catalogs with more than 210 million stars
• Asterisms and illustrations of the constellations
• Constellations for twelve different cultures
• Images of nebulae (full Messier catalog)
• Realistic Milky Way
• Very realistic atmosphere, sunrise and sunset
• The planets and their satellites

Interface

• A powerful zoom
• Time control
• Multilingual interface
• Fisheye projection for planetarium domes
• Spheric mirror projection for your own low-cost dome
• All new graphical interface and extensive keyboard control
• Telescope control

Visualization

• Equatorial and azimuthal grids
• Star twinkling
• Shooting stars
• Eclipse simulation
• Supernovae simulation
• Skinnable landscapes, now with spheric panorama projection

Customizability

• Plugin system adding artificial satellites, ocular simulation, telescope configuration and more
• Ability to add new solar system objects from online resources…
• Add your own deep sky objects, landscapes, constellation images, scripts…

Note: Requires 64-bit processor.

Also Available: Download Stellarium for Windows